计算器 一个我用不着的计算器.我怀疑为什么这个网站这么麻烦,注册了会员还要上载源码.而上载的源码又不能太短.烦透了.这次下载完了再也不来了.-calculator I do not need a calculator. I wonder why this site too much trouble, the members also registered on the source. While the source code available can not be too short. Ca